Home / 218,589,905.70-327,674,906.55-126,378,987.30

Finding the Fourth Proportional to 218,589,905.70, 327,674,906.55 and 126,378,987.30

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Solution

The fourth proportional to 218,589,905.70, 327,674,906.55 and 126,378,987.30 is: 189,447,096.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,589,905.70 : 327,674,906.55 = 126,378,987.30 : x
  2. Step 2: Convert to fraction form
    218,589,905.70/327,674,906.55 = 126,378,987.30/x
  3. Step 3: Cross multiply
    218,589,905.70x = 327,674,906.55 × 126,378,987.30
  4. Step 4: Simplify right side
    218,589,905.70x = 41,411,222,853,411,136
  5. Step 5: Solve for x
    x = 41,411,222,853,411,136/218,589,905.70
  6. Step 6: Final answer
    x = 189,447,096.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.